1. Tardigrade
  2. Question
  3. Physics
  4. Assertion Cp can be less than CV. Reason Cp CV=R is valid only for ideal gases.

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Q. Assertion $C_{p}$ can be less than $C_{V}$.
Reason $C_{p} C_{V}=R$ is valid only for ideal gases.

AIIMSAIIMS 2011

Solution:

$C_{p}$ can be less than $C_{V}$ for those substances which contract on heating like for water from 0 to $4^{\circ} C$.